人教版英语八年级上Unit3课件.ppt

Unit3Whatdoeshe/shelooklike?JimshortJordanistall.LiuHuanisheavy.CaiYilin'shairislong.1.Jordanistall.Theredboxisbig.Thepurplerulerislong.LinXinruisthin.LiYongismoreoutgoingthanChenglong.ZhaoWei’seyes.tallthinlonghairquietlyListenandnumberthepairsoftwinsinthepicture.Conversation1A:IsthatSamplaytheguitar?B:No.That’sTom.Samhas______hair_____Tom.C:BothTomandSamcanplaythedrums.butSamplaysthem______thanTom.Conversation2A:That’sTara,isn’tit?B:No,itisn’t.It’sTina.Tinais______thanTara.Andshealsosings____________thanTara.Conversation3A:IsthatPaul?B:No,that’sPeter.Peter’s________thanPaul.AndPaul’s________thanPeter.TinaIsthatTara?No,itisn’t.It’sPaul.--IsthatEric?大多数形容词和副词有三个等级：原级、比较级、最高级。一、构成1.构成的不规则变化:eg.good/well–better–bestbad/badly–worse–worstmany/much–more–mostlittle–less–leastfar–farther/further–farthest/furthest2.构成的规则变化:1)单音节词和少数双音节词一般在词尾后加-er或-est.如：cold–colder–coldestnice—nicer–nicest2)重读闭音节词末尾只有一个辅音字母时,先双写这个辅音字母,再加-er或-est。如:big–bigger–biggestthin–thinner–thinnest3)以“辅音字母+y”结尾的双音节词，先改y为i,再加-er或-est。如：easy–easier–easiesthappy–happier–happiest4)多音节词和部分双音节词在词前加more或most。如：delicious–moredelicious–mostdeliciousinteresting–moreinteresting–mostinteresting比较级规则变化口诀：二、用法1.比较级表示两者(人或事物)的比较。eg.IamtallerthanTom.Mydressismorebeautifulthanhers.2.最高级表示三者或三者以上(人或事物)的比较,其中有一个在某一方面超过其他几个时,用最高级。最高级的前面一般要加定冠词the,后面可带of(in)短语来说明比较的范围。如：Sheistheyoungestintheclass.Jasonisthetallestofthethree.Whosehandwritingisthebestofall?3.在形容词比较级前还可用much,even,still,alittle来修饰,表示“……的多”,“甚至……”,“更……”,“……一些”。如：Thiscityismuchmorebeautifulthanbefore.She’salittlemoreoutgoingthanme.It’salittlecoldertoday.4.“比较级＋and＋比较级”意为“越来越……”。多音节比较级用“moreandmore＋形容词原级”形式。如：It’sgettingworseandworse.Thegroupbecamemoreandmorepopular.5.“Which/Whois+比较级…？”比较A、B两事物,问其中哪一个较……时用此句型。如：WhichT-shirtisnicer,thisoneorthatone?Whoismoreactive,MaryorKate?Whichoneismorepopularamongstudents,goingtoconcertsorgoingtomovies?6.使用形容词比较级时需注意以下几点：1)than后面接代词时,一般要用主格形式，但在口语中也可使用宾格形式。如：MybrotheristallerthanI/me.2)当需要表示一方超过另一方的程度时，可以用much,alot,alittle,ab